222996996 has 96 divisors (see below), whose sum is σ = 614768000. Its totient is φ = 69704064.

The previous prime is 222996989. The next prime is 222996997. The reversal of 222996996 is 699699222.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (222996997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 223170 + ... + 224166.

Almost surely, 2^222996996 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222996996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (307384000).

222996996 is an abundant number, since it is smaller than the sum of its proper divisors (391771004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

222996996 is a wasteful number, since it uses less digits than its factorization.

222996996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1138 (or 1130 counting only the distinct ones).

The product of its digits is 1889568, while the sum is 54.

The square root of 222996996 is about 14933.0839413699. The cubic root of 222996996 is about 606.4099764732.

It can be divided in two parts, 2229 and 96996, that added together give a square (99225 = 315²).

The spelling of 222996996 in words is "two hundred twenty-two million, nine hundred ninety-six thousand, nine hundred ninety-six".